Bone marrow biopsy needle

Details Bone marrow biopsy needle Bone marrow biopsy needle

A - Human Necessities

61

B

A61B 10/00 (2006.01) A61B 17/32 (2006.01)

Patent

CA 2214825

A bone marrow biopsy needle includes an outer tube (10) having a lumen extending therethrough which narrows (18) at the distal end of the outer tube (10). An inner tube (30) is slidable through the lumen of the outer tube (10) and includes a pair of pincers (32) at its distal end. As the inner tube (30) is slid through the lumen of the outer tube (10), the pincers (32) will encounter the narrowed portion (18) of the lumen, and as the pincers (32) extend beyond an opening at the distal end of the outer tube (10), the pincers (32) close upon themselves. In this manner, the pincers (32) can grasp a biopsy core from bone marrow of a patient. The pincers (32) may have sharpened edges and/or have their edges bent radially inwardly so as to enhance the cutting of the biopsy core from the bone marrow.

Aiguille à ponction-biopsie de moelle osseuse comprenant un tube extérieur (10) ayant une lumière passant à travers qui se rétrécit (18) à l'extrémité distale dudit tube (10). Un tube intérieur (30) est coulissable dans la lumière du tube extérieur (10) et comporte une paire de pinces (32) à son extrémité distale. Lorsqu'on fait coulisser le tube intérieur (30) dans la lumière du tube extérieur (10), les pinces (32) rencontrent la partie rétrécie (18) de la lumière et lorsqu'elles s'étendent au-delà d'un orifice à l'extrémité distale du tube extérieur (10), elles se referment sur elles-mêmes. De la sorte, les pinces (32) peuvent saisir un fragment de la moelle osseuse d'un patient pour biopsie. Les pinces (32) peuvent avoir des bords coupants et/ou avoir des bords recourbés radialement vers l'intérieur pour une meilleure section du fragment de moelle osseuse pour biopsie.

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